A solitary sinonasal angiomatous polyp presenting with obstructive sleep apnea in an adult

Background: Obstructive sleep apnea (OSA) is frequently encountered in adult sleep disorders and needs careful differential diagnosis. Ear, nose, throat examination, including naso-laryngeal endoscopy, is mandatory in all cases to rule out potential obstructing lesions causing OSA. Clinical presentation: This report presents a 64-year-old male with snoring, nasal blockage (especially during night-time), and mild OSA. Physical-examination and CT revealed a unilateral vascularized left sinonasal mass extending to the nasopharynx and protruding into the oropharynx during inhalation. Due to suspicions of malignancy or vascular tumor, the patient also underwent contrast MRI. Endoscopic surgery was performed, and the final diagnosis was a sinonasal angiomatous polyp (SAP). SAPs are rare, and this is the first reported case of an adult solitary unilateral angiomatous polyp referral for OSA. Conclusion: Nasal masses need to be considered in the differential diagnosis of patients with obstructive sleep disorders in order to avoid wrong or ineffective treatment.